▎ 摘　　要

NOVELTY - Preparation of high-performance graphene heat-conducting film involves (S1) preparing graphene powder by bubbling growth in liquid metal by chemical vapor deposition (CVD) method, (S2) spraying and mixing collected graphene powder using resin binder solution, and uniformly mixing to obtain viscous powder, (S3) feeding the viscous powder into calender for primary calendering to obtain graphene film (A), (S4) graphitizing the graphene film (A) under the protection of inert gas to obtain graphene film (B), controlling the amount of carbon residue formed by resin binder after graphitization treatment to be 2-5 wt.% graphene film (B), and (S5) placing the graphene film (B) in calender for secondary calendering. The resin binder solution is obtained by diluting aqueous binder resin or oily binder resin with a solvent. The binder resin is chosen from one of polyurethane, epoxy resin, phenolic resin, acrylic resin, amino resin, unsaturated polyester resin and saturated polyester resin. USE - Preparation of high-performance graphene heat-conducting film used in electronic device. ADVANTAGE - The method is simple in preparation process and easy to expand production, and the prepared graphene heat-conducting film is excellent in heat-conducting property and heat-radiating performance, the method ensures no wastewater and waste gas emission of the graphene heat conducting film, and does not pollute the environment